Curtain track unit



FIG. 1 is a fragmentary perspective view of the top and one side of a curtain track unit showing my new design;

FIG. 2 is a fragmentary perspective view of the bottom and opposite side thereof; and

FIG. 3 is an end elevation view thereof, the opposite end being a mirror image of that shown.

The curtain track unit has been broken away at one end in FIGS. 1 and 2 to indicate indeterminate length. 

The ornamental design for a curtain track unit, as shown and described. 